Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Mitochondrial complex I and V gene polymorphisms associated with breast cancer in mizo-mongloid population

Thapa, Sunaina ; Lalrohlui, Freda ; Ghatak, Souvik LU ; Zohmingthanga, John ; Lallawmzuali, Doris ; Pautu, Jeremy L and Kumar, Nachimuthu Senthil (2015) In Breast Cancer 23. p.607-616
Abstract
Background
Mizoram has the highest incidence of cancer in India. Among women, breast cancer is most prevalent and the state occupies fifth position globally. The reason for high rate of cancer in this region is still not known but it may be related to ethnic/racial variations or lifestyle factors.

Methods
The present study aims to identify the candidate mitochondrial DNA (mtDNA) biomarkers—ND1and ATPase for early breast cancer diagnosis in Mizo population. Genomic DNA was extracted from blood samples of 30 unrelated breast cancer and ten healthy women. The mtNDI and mtATP coding regions were amplified by step-down PCR and were subjected to restriction enzyme digestion and direct sequencing by Sanger method. Subsequently,... (More)
Background
Mizoram has the highest incidence of cancer in India. Among women, breast cancer is most prevalent and the state occupies fifth position globally. The reason for high rate of cancer in this region is still not known but it may be related to ethnic/racial variations or lifestyle factors.

Methods
The present study aims to identify the candidate mitochondrial DNA (mtDNA) biomarkers—ND1and ATPase for early breast cancer diagnosis in Mizo population. Genomic DNA was extracted from blood samples of 30 unrelated breast cancer and ten healthy women. The mtNDI and mtATP coding regions were amplified by step-down PCR and were subjected to restriction enzyme digestion and direct sequencing by Sanger method. Subsequently, the results of the DNA sequence analysis were compared with that of the revised Cambridge Reference Sequence (rCRS) using Mutation Surveyor and MITOMAP.

Results
Most of the mutations were reported and new mutations that are not reported in relationship with breast cancer were also found. The mutations are mostly base substitutions. The effect of non-synonymous substitutions on the amino acid sequence was determined using the PolyPhen-2 software. Statistical analysis was performed for both cases and controls. Odds ratios (ORs) and 95 % confidence intervals (CIs) were estimated from logistic regression. High intake of animal fat and age at menarche was found to be associated with a higher risk of breast cancer in Mizo population.

Conclusion
Our results also showed that ATPase6 as compared to ATPase8 gene is far more predisposed to variations in Mizo population with breast cancer and this finding may play an important role in breast cancer prognosis. (Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; and
publishing date
type
Contribution to journal
publication status
published
in
Breast Cancer
volume
23
pages
607 - 616
publisher
Springer
external identifiers
  • scopus:84928152203
ISSN
1880-4233
DOI
10.1007/s12282-015-0611-1
language
English
LU publication?
no
id
2a9c4106-bdb5-4561-8588-7b7e7df65fea
date added to LUP
2021-11-09 16:30:14
date last changed
2022-04-11 21:15:50
@article{2a9c4106-bdb5-4561-8588-7b7e7df65fea,
  abstract     = {{Background<br/>Mizoram has the highest incidence of cancer in India. Among women, breast cancer is most prevalent and the state occupies fifth position globally. The reason for high rate of cancer in this region is still not known but it may be related to ethnic/racial variations or lifestyle factors.<br/><br/>Methods<br/>The present study aims to identify the candidate mitochondrial DNA (mtDNA) biomarkers—ND1and ATPase for early breast cancer diagnosis in Mizo population. Genomic DNA was extracted from blood samples of 30 unrelated breast cancer and ten healthy women. The mtNDI and mtATP coding regions were amplified by step-down PCR and were subjected to restriction enzyme digestion and direct sequencing by Sanger method. Subsequently, the results of the DNA sequence analysis were compared with that of the revised Cambridge Reference Sequence (rCRS) using Mutation Surveyor and MITOMAP.<br/><br/>Results<br/>Most of the mutations were reported and new mutations that are not reported in relationship with breast cancer were also found. The mutations are mostly base substitutions. The effect of non-synonymous substitutions on the amino acid sequence was determined using the PolyPhen-2 software. Statistical analysis was performed for both cases and controls. Odds ratios (ORs) and 95 % confidence intervals (CIs) were estimated from logistic regression. High intake of animal fat and age at menarche was found to be associated with a higher risk of breast cancer in Mizo population.<br/><br/>Conclusion<br/>Our results also showed that ATPase6 as compared to ATPase8 gene is far more predisposed to variations in Mizo population with breast cancer and this finding may play an important role in breast cancer prognosis.}},
  author       = {{Thapa, Sunaina and Lalrohlui, Freda and Ghatak, Souvik and Zohmingthanga, John and Lallawmzuali, Doris and Pautu, Jeremy L and Kumar, Nachimuthu Senthil}},
  issn         = {{1880-4233}},
  language     = {{eng}},
  pages        = {{607--616}},
  publisher    = {{Springer}},
  series       = {{Breast Cancer}},
  title        = {{Mitochondrial complex I and V gene polymorphisms associated with breast cancer in mizo-mongloid population}},
  url          = {{http://dx.doi.org/10.1007/s12282-015-0611-1}},
  doi          = {{10.1007/s12282-015-0611-1}},
  volume       = {{23}},
  year         = {{2015}},
}