Joseph Al Haddad

ORCID: 0000-0002-8686-3151
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About
Contact & Profiles
Research Areas
  • RNA modifications and cancer
  • Epigenetics and DNA Methylation
  • Genetics, Aging, and Longevity in Model Organisms
  • Genomics and Chromatin Dynamics
  • Genetics and Neurodevelopmental Disorders

Brigham and Women's Hospital
2024

Harvard University
2024

Boston Children's Hospital
2021-2024

Boston Children's Museum
2024

Washington University in St. Louis
2024

Heritable non-genetic information can regulate a variety of complex phenotypes. However, what specific cues are transmitted from parents to their descendants poorly understood. Here, we perform metabolic methyl-labeling experiments track the heritable transmission methylation ancestors in nematode Caenorhabditis elegans (C. elegans). We find DNA, RNA, proteins, and lipids. that parental starvation elicits reduced fertility, increased heat stress resistance, extended longevity fed, naïve...

10.1016/j.molcel.2023.08.014 article EN cc-by-nc-nd Molecular Cell 2023-09-01

Ribosome heterogeneity has emerged as an important regulatory control feature for determining which proteins are synthesized, however, the influence of age on ribosome is not fully understood. Whether mRNA transcripts selectively translated in young versus old cells and whether dysregulation this process drives organismal aging unknown. Here we examined role ribosomal RNA (rRNA) methylation maintaining appropriate translation organisms age. In a directed RNAi screen, identified 18S rRNA...

10.1101/2024.05.14.594211 preprint EN cc-by-nc-nd bioRxiv (Cold Spring Harbor Laboratory) 2024-05-15

<title>Abstract</title> Ribosome heterogeneity has emerged as an important regulatory control feature for determining which proteins are synthesized, however, the influence of age on ribosome is not fully understood. Whether mRNA transcripts selectively translated in young versus old cells and whether dysregulation this process drives organismal aging unknown. Here we examined role ribosomal RNA (rRNA) methylation maintaining appropriate translation organisms age. In a directed RNAi screen,...

10.21203/rs.3.rs-4421268/v1 preprint EN cc-by Research Square (Research Square) 2024-06-21

Summary Heritable non-genetic information can regulate a variety of complex phenotypes. However, what specific cues are transmitted from parents to their descendants poorly understood. Here, we perform metabolic methyl-labelling experiments track the heritable transmission methylation ancestors in nematode Caenorhabditis elegans . We find that is proteins, RNA, DNA and lipids. further response parental starvation, fed naïve progeny display reduced fertility, increased heat stress resistance,...

10.1101/2021.09.27.461965 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2021-09-27

Abstract Post-translational modifications of histone tails alter chromatin accessibility to regulate gene expression. Some viruses exploit the importance by expressing mimetic proteins that contain histone-like sequences sequester complexes recognize modified histones. Here we identify an evolutionarily conserved and ubiquitously expressed, endogenous mammalian protein Nucleolar 16 (NOP16) functions as a H3K27 mimic. NOP16 binds EED in trimethylation PRC2 complex demethylase JMJD3. knockout...

10.1101/2023.06.13.544862 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2023-06-13
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