Cited by 66High Altitude and HypoxiaCancer, Hypoxia, and MetabolismPhysiological and biochemical adaptations

cDNA cloning, gene organization and variant specific expression of HIF-1α in high altitude yak (Bos grunniens)

Dolt, Karamjit S., Mishra, Manoj K., Karar, Jayashree, Baig, Masroor A., Ahmed, Zakwan, Pasha, M.A. Qadar·2007·Gene

Abstract

Hypoxia-inducible factor 1 (HIF-1) is a heterodimeric basic-helix-loop-helix-PER-ARNT-SIM (bHLH-PAS) transcription factor consisting of HIF-1alpha and HIF-1beta subunits. HIF-1alpha is the oxygen-regulated subunit of HIF-1, which regulates the transcription of genes involved in oxygen homeostasis in response to hypoxia. Yak (Bos grunniens), a mammal native to high altitude (HA) region ( approximately 3500-5500 m), has successfully adapted over many generations to the chronic hypoxia of HA. In the present work, cDNA encoding HIF-1alpha has been cloned from the blood of yak. Tissue specific expression of the mRNA was analyzed in blood, heart, lung, liver and kidney by RT-PCR with primers from three different regions of cDNA. The HIF-1alpha expression was liver and blood specific. The HIF-1alpha mRNA contains 823 bp long 3'UTR that is AU-rich and contains ten AUUUA pentamers and two overlapping copies of the nonamer UUAUUUAUUUAUU. Three potential microRNAs, hsa-miR-107/mmu-miR-107/rno-miR-107, hsa-miR-18b and hsa-miR-135a/mmu-miR-135a/rno-miR-135a, targeting 3'UTR of yak HIF-1alpha, were identified by using target prediction software. The CDS encodes for 823 residues of amino acids and showed 99%, 95%, 92%, 90% and 90% similarity to domestic cattle, human, plateau pika, mouse and rat HIF-1alpha, respectively. HIF-1alpha cDNA, cloned and sequenced in the present work has revealed the evolutionary conservation through multiple sequence alignment. Liver and blood specific stability of HIF-1alpha mRNA appears miR-107 regulated.

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Crossref · 10.1016/j.gene.2006.08.004

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  • Yaks have numerous anatomical and physiological traits that equip them for life at high altitude, including large lungs and hearts, lack of hypoxic pulmonary vasoconstriction, increased foraging ability, strong environmental sense and high energy metabolism.

    “Yaks have numerous anatomical and physiological traits that equip them for life at high altitude, including large lungs and hearts 1 , lack of hypoxic pulmonary vasoconstriction 5 , increased foraging ability 6 , strong environmental sense 1 and high energy metabolism 1,7 .”

    From The yak genome and adaptation to life at high altitude (2012) · cites this paper as [5]

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Authors
Dolt, K. S., Mishra, M. K., Karar, J., Baig, M. A., Ahmed, Z., & Pasha, M. A. Q.
Affiliations
  • Institute of Genomics and Integrative Biology (IN)
  • Jamia Hamdard (IN)
  • Defence Research and Development Organisation (IN)
Corresponding author
Pasha, M.A. Qadar
Venue
Gene
Publisher
Elsevier BV
Published
2007-01
Volume
386
Issue
1-2
Pages
73-80
ISSN
0378-1119 (ISSN-L)
OpenAlex
W2088344922
Cited by
65
References
42
Citations by year
2025: 2 · 2024: 1 · 2023: 2 · 2022: 4 · 2021: 5 · 2020: 15 · 2019: 6 · 2018: 1 · 2017: 3 · 2015: 4 · 2014: 2 · 2013: 3 · 2012: 4
FWCI
1.70
Type
journal article
Language
en
Open access
closed
Locations
  • Gene (publishedVersion)
  • PubMed (publishedVersion)
Funders
Council of Scientific and Industrial Research, India
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › High Altitude and Hypoxia
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Physical Sciences › Environmental Science › Ecology › Physiological and biochemical adaptations
Keywords
HIF-1α, yak, high-altitude adaptation, hypoxia, cDNA cloning, gene structure, miRNA target prediction, miR-107, miR-18b, miR-135a, tissue-specific gene expression, mRNA stability, oxygen homeostasis, evolutionary conservation
MeSH terms
Altitude, Animals, Base Sequence, Cattle, Gene Expression Regulation, Molecular Sequence Data, RNA, Messenger, Hypoxia-Inducible Factor 1, alpha Subunit

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