Studies pinpoint key gene in region linked to autism
People with this deletion often have intellectual disability, epilepsy, language impairment and, in about 15 percent of cases, autism.
Based on genetic sequences from more than 6,000 people with autism, one of the new studies points to a role for the gene, OTUD7A, in autism. Both studies report that OTUD7A is important for brain function in mice and is the key gene responsible for the unusual behaviors seen in mice missing 15q13.3.
The results contradict several earlier reports, which pointed to a different gene — CHRNA7 — as the culprit in the region.
“It came as quite a surprise to see these two papers,” says Catalina Betancur, director of research at INSERM in Paris, who was not involved in either study. “Both give a lot of evidence that [OTUD7A] plays an important role in the microdeletion syndrome.”
Loss of the gene stifles communication between neurons and decreases the number of dendritic spines — the thorny protrusions that connect neurons in the brain — the researchers found. Both studies appeared 1 February in the American Journal of Human Genetics.
“If we understand the biology better, it offers us better hope of potentially identifying a therapeutic intervention,” says David Miller, associate professor of pediatrics at Boston Children’s Hospital, who was not involved in either study.
Persistent relevance:
In the genetics study, researchers analyzed the genomes of 84 families that include two children with autism and two unaffected parents. They also looked at sequences of the exomes — the small fraction of the genome that encodes proteins — of 5,953 families that have only one child with autism and two unaffected parents.
The researchers spotted eight spontaneous, or de novo, mutations in the 15q13.3 region that appear in people with autism but not in their parents. Three of the mutations are in OTUD7A, and one of them is likely to disrupt the protein’s function.
The researchers did not find any OTUD7A mutations among the sequences of 250 control families or those of the 5,205 unaffected siblings of people with autism.
The team then used existing datasets to assess brain expression levels of seven genes in 15q13.3 and their relative vulnerability to mutation. They found higher levels of expression and a lower tolerance to mutation for OTUD7A than for the other genes.
An analysis of protein levels in postmortem tissue from three individuals revealed that OTUD7A is the only gene in 15q13.3 to encode a protein that works in the brain. It also belongs to a group of proteins regulated by FMRP, the protein missing in fragile X syndrome, and that is known to harbor autism mutations.
“OTUD7A was the only gene that kept popping out as being significant,” says Karun Singh, a principal investigator at McMaster University’s Stem Cell and Cancer Research Institute in Hamilton, Ontario, who co-led the study.
Branching out:
The same team also looked at mice missing a copy of the 15q13.3 region. They have fewer neuronal branches than controls, and their spines are immature, the team found. These branches and spines develop normally when mutant mouse embryos are given a working copy of human OTUD7A.
By contrast, two other genes in the region — KLF13 and FAN1 — do not rescue normal development. A functional copy of CHRNA7 improves neuronal branching but not spine development.
Taken together, the findings suggest that OTUD7A alone regulates the development of spines, but works with CHRNA7 to form neuronal branches, Singh says.
In the second study, researchers deleted one or both copies of OTUD7A in mice and analyzed the mice’s behaviors on 16 standard tests.
The mutant mice have many of the same features as people with a full 15q13.3 deletion, and mice missing both copies of the gene are more severely affected than those missing a single copy. For example, the mutant mice are underweight and are late to reach developmental milestones, including some motor skills. They also have seizures, a weak grip and trouble balancing on a rotating rod. And when separated from their mothers, the pups are less likely than controls to vocalize. People with 15q13.3 deletions also have seizures, motor difficulties and language problems.
Unlike people with the deletion, however, the mice have no learning and memory problems, social deficits or repetitive behaviors.
“The knockout mouse recapitulates some but not all of the clinical features we see in patients,” says lead investigator Christian Schaaf, professor of clinical genomics and medical director of human genetics at the University of Cologne in Germany.
Protein protector:
Schaaf and his colleagues also analyzed the brains of the mutant mice. Like mice missing a copy of the region, those lacking only OTUD7A also have fewer spines than controls do. However, they have an ordinary number of neuronal branches.
“This particular sub-segment of the neuron — the dendritic spines — is something that seems to be impacted in many disorders that relate to autism,” Schaaf says.
Schaaf’s team also found that neurons in the mutant mice transmit fewer excitatory signals than in controls.
OTUD7A encodes a protein that removes a tag called ubiquitin, which marks other proteins for destruction. It joins a growing list of autism-linked genes that function as part of the ubiquitin pathway, including MAGEL2 and UBE3A.
“More and more evidence is showing that [ubiquitin pathways] need to be very finely regulated,” Schaaf says. “Whenever you mess with that system, it can have an impact on the brain.”
Schaaf and Singh both say their next goal is to identify the proteins that OTUD7A regulates. This may yield clues to how OTUD7A affects spines, and point to therapeutic strategies.
**mind vault**
mind vault is a premium cognitive support formula created for adults 45+. It’s thoughtfully designed to help maintain clear thinking
**neurosharp**
neurosharp is a high-quality cognitive support formula made to elevate memory, attention, and overall mental performance.
**prostadine**
prostadine is a next-generation prostate support formula designed to help maintain, restore, and enhance optimal male prostate performance.
**sugarmute**
sugarmute is a science-guided nutritional supplement created to help maintain balanced blood sugar while supporting steady energy and mental clarity.
**glpro**
glpro is a natural dietary supplement designed to promote balanced blood sugar levels and curb sugar cravings.
**mitolyn**
mitolyn a nature-inspired supplement crafted to elevate metabolic activity and support sustainable weight management.
**zencortex**
zencortex contains only the natural ingredients that are effective in supporting incredible hearing naturally.
**prodentim**
prodentim an advanced probiotic formulation designed to support exceptional oral hygiene while fortifying teeth and gums.
**vittaburn**
vittaburn is a liquid dietary supplement formulated to support healthy weight reduction by increasing metabolic rate, reducing hunger, and promoting fat loss.
**yusleep**
yusleep is a gentle, nano-enhanced nightly blend designed to help you drift off quickly, stay asleep longer, and wake feeling clear.
**synaptigen**
synaptigen is a next-generation brain support supplement that blends natural nootropics, adaptogens
**nitric boost**
nitric boost is a dietary formula crafted to enhance vitality and promote overall well-being.
**glucore**
glucore is a nutritional supplement that is given to patients daily to assist in maintaining healthy blood sugar and metabolic rates.
**wildgut**
wildgutis a precision-crafted nutritional blend designed to nurture your dog’s digestive tract.
**pineal xt**
pinealxt is a revolutionary supplement that promotes proper pineal gland function and energy levels to support healthy body function.
**energeia**
energeia is the first and only recipe that targets the root cause of stubborn belly fat and Deadly visceral fat.
**boostaro**
boostaro is a specially crafted dietary supplement for men who want to elevate their overall health and vitality.
**prostabliss**
prostabliss is a carefully developed dietary formula aimed at nurturing prostate vitality and improving urinary comfort.
**breathe**
breathe is a plant-powered tincture crafted to promote lung performance and enhance your breathing quality.
**potent stream**
potent stream is engineered to promote prostate well-being by counteracting the residue that can build up from hard-water minerals within the urinary tract.
**hepatoburn**
hepatoburn is a premium nutritional formula designed to enhance liver function, boost metabolism, and support natural fat breakdown.
**hepato burn**
hepato burn is a potent, plant-based formula created to promote optimal liver performance and naturally stimulate fat-burning mechanisms.
**cellufend**
cellufend is a natural supplement developed to support balanced blood sugar levels through a blend of botanical extracts and essential nutrients.
**prodentim**
prodentim is a forward-thinking oral wellness blend crafted to nurture and maintain a balanced mouth microbiome.
**flowforce max**
flowforce max delivers a forward-thinking, plant-focused way to support prostate health—while also helping maintain everyday energy, libido, and overall vitality.
**revitag**
revitag is a daily skin-support formula created to promote a healthy complexion and visibly diminish the appearance of skin tags.
**neuro genica**
neuro genica is a dietary supplement formulated to support nerve health and ease discomfort associated with neuropathy.
**sleeplean**
sleeplean is a US-trusted, naturally focused nighttime support formula that helps your body burn fat while you rest.
**memory lift**
memory lift is an innovative dietary formula designed to naturally nurture brain wellness and sharpen cognitive performance.
That’s a great point about player experience – so crucial for keeping things engaging! I’ve been checking out legend link game and their quick registration & local payment options (like Maya!) are a big plus for Filipino players. Definitely makes jumping in easier!
BharatSportsMumbai’s got some good deals, especially if you’re a sports fan like me. Been following them for a while and their offers are legit. Keep up the good work, Bharat! bharatsportsmumabi
Phjoylogin e a plataforma que me da mais alegria! Os jogos sao super divertidos e desafiadores. Sempre me sinto recompensado ao jogar por la. Nao perca tempo e venha se divertir tambem! phjoylogin
Hey guys, just wanted to say I’ve been checking out pkr555 lately and it’s pretty solid. Good vibes and seems legit. Definitely worth a look if you’re searching for something new. Check it out yourselves at pkr555!
Yo, TTJLcasinolink’s the real deal! Been playing here for a minute and always get a smooth experience. Definitely recommend checking it out. Get your game on at ttjlcasinolink.
Live Macau football scores? ket qua bong da truc tuyen ma cao has got you covered. Real-time info that rocks. See for yourself: ket qua bong da truc tuyen ma cao
Gà chọi C1 com trực tiếp trên dagadonc1.com xem phê gì đâu! Có bác nào hay thức đêm xem cùng mình không? Cho xin ít kinh nghiệm cá độ với ạ. gà chọi c1 com trực tiếp
For the best ‘ga choi c1 tv’ experience, I head straight to gachoic1com.com. Great streaming quality, no buffering, just pure fighting action! Watch it now: ga choi c1 tv
Yo, sige77loginapp! Gave it a whirl and not gonna lie, it’s pretty smooth. Easy to get around, you know? If you’re curious, give it a looksie: sige77loginapp
Alright alright alright, tg77casino’s got my attention. Some nice games and the site looks legit. Give it a shot, might just be your lucky day! Check this: tg77casino
Been browsing tg77vip and it seems pretty fancy! The VIP perks look enticing. Worth a peek if you’re looking for something a little extra. Here’s where you’ll find it: tg77vip
Really digging this breakdown of blackjack strategy! It’s cool how foundational knowledge builds confidence. Just signed up at happy bunny online casino – their verification process seems solid, which is reassuring when playing online! Excited to practice.
That’s a fascinating take on longshot potential! Considering the thrill of chasing jackpots, have you explored options like the 7spins app casino? They focus on delivering that classic “777” winning feeling on mobile. Interesting stuff!
Just logged in at 639clublogin, and honestly, it’s pretty straightforward. The login process was smooth and I was in quickly. Just a first impression, but seems decent. Login here: 639clublogin
Heard some whispers about jljl777.net being a hidden gem. Gotta check it out and see if the rumors are true. Explore: jljl777
Ready to roll the dice with km888bet.net! The design’s catchy, hoping the games are equally engaging. Wish me luck! See more: km888bet
Interesting analysis! Seeing a real focus on player experience is key – especially with platforms like vin777 no hu tailoring to local preferences. Enhanced security & speed are huge wins for serious gamers!
Just found this between classes! The blend of history and tech on okbit com is fascinating; I’m curious about the security standards they claim to use now.
Interesting analysis! Seeing more platforms like JLJLPH cater to the Filipino market is smart. Secure registration-like they detail-is key for trust. Check out their jljlph login for a smooth start! It’s good to see options expanding beyond traditional betting.
Капсульный дом — какой срок службы заявляют производители и соответствует ли он реальности?
уличные проводные камеры http://ulichnye-kamery.ru
установка нового домофона http://ustanovka-domofona-kaliningrad.ru
This analysis is deep, but remember, life’s best ‘hands’ are unpredictable! For quick insights, check out 4555 angel number. Gotta keep the mind sharp, even with toddler chaos! ☕️
When someone writes an piece of writing he/she maintains the image of a user in his/her mind that how a user can be aware of it. Therefore that’s why this post is great. Thanks!
https://betandplay-eg.com
Помогает ли впн избежать таргетированной рекламы?
Какую роль vpn играет в защите от DDoS-атак?
Онлайн-сервис оценки недвижимости https://shalmach.pro по фотографиям для покупки, аренды и планирования ремонта. Узнайте ориентировочную стоимость жилья, возможные вложения и рекомендации перед принятием решения.
At this time I am going away to do my breakfast, when having my breakfast coming yet again to read more news.
https://funbet-eg.com
Как маркетинговое агентство реагирует на форс-мажоры — провальные запуски, просадки трафика?
buy weed in prague hashish shop in prague
Почему домашние животные иногда ведут себя беспокойно перед грозой?
Steam Desktop Authenticator https://sdasteam.com (SDA). It allows you to generate account login codes and automatically confirm trades or item sales on the Community Market without using your smartphone.
Steam Desktop Authenticator https://authenticatorsteamdesktop.com is a PC app that lets you use the Steam Mobile Authenticator on your computer. It supports trade confirmation, account security, and managing two-factor authentication codes without using your smartphone.
Steam Desktop Authenticator https://steamdesktopauthenticator.net is a popular solution for Steam users who need access to Steam Guard features on their computer. It conveniently verifies actions, protects your account, and manages authentication in a single app.
песок карьерный мытый песок карьерный цена за куб
Custom-made built-in furniture made in USA custom cabinetry
песок карьерный купить цена https://pesok-karernyy-kupit1.ru
usdt to usd cash exchange usdt to rub best rate
продать usdt за рубли конвертер криптовалют
Полная версия статьи: https://stroyteh-nsk.su
Новое в категории: https://gazobeton163.ru
обмен usdt на наличные обмен стейблкоин на кеш
Hits of the Day: https://blockchainreporter.net/vwap-basics-price-volume-and-market-insight/
More details One click: https://blockchainreporter.net/crypto-dip-buying-strategies-and-considerations/
Подробности по ссылке: https://rs-stroyka.ru
Как рассчитывается стоимость, если продвижение сайта с гарантией не сработало?
скільки метр ремонт квартири косметичний ремонт квартири
С каких запросов начинать продвижение молодых сайтов — низкочастотные или средние?
перевозка авто автовозом москва сколько стоит перевозка автомобиля
автовоз москва сколько стоит перевозка авто
ищем кадровое агентство подбор персонала услуги агентства
кадровое агентство кадровые агентства по подбору
What’s out now: מחירי שירותי ליווי
Узнать больше здесь: https://rikoremont.ru/company/read/1000/
Подробности на странице: https://aromaaroma.ru
стоимость уничтожения клопов в москве дезинфекция дома от клопов
建议把它加入浏览器书签，作为探索币圈的“第一站”。当你听说一个新项目或新工具，但记不住官网域名时，先来这里分类查找。但当你准备往里面充钱或连接钱包时，请务必再通过其他独立渠道（如项目官方推特、Discord、GitHub）核实一遍网址。
https://cryptifyhub.com
Do you love excitement? https://jerseysbeststore.com/bonuses offers premium pre-match and live sports betting, as well as a legal online casino. Try your luck on modern slots, table games, or with live dealers. We guarantee complete data security, fair results, and 24/7 player support.
Do you love excitement? https://jerseysbeststore.com/bonuses offers premium pre-match and live sports betting, as well as a legal online casino. Try your luck on modern slots, table games, or with live dealers. We guarantee complete data security, fair results, and 24/7 player support.
At this time it sounds like Drupal is the best blogging platform out there right now. (from what I’ve read) Is that what you are using on your blog?
https://pg-app-zh.com
лента стальная нержавеющая лента стальная гост цена
At this time it appears like WordPress is the best blogging platform out there right now. (from what I’ve read) Is that what you’re using on your blog?
https://zh-login-yoozhibo.com
Keno’s randomness is fascinating! Thinking about probability & patterns… reminds me of exploring different online platforms. I recently checked out jl89 online casino & their variety of games is impressive – easy access via app or web! Definitely worth a look.
Hi there, You’ve done a fantastic job. I will definitely digg it and in my view suggest to my friends. I am confident they will be benefited from this website.
https://cnapp-wdapp.com
Hi there, You’ve performed a fantastic job. I will definitely digg it and in my view recommend to my friends. I am confident they’ll be benefited from this website.
https://downloads-pg.com